Valve-spring lifter



Patented May 13, 1924.

UNITED STATES JOHN J. BARTENSTEIN. or

CLEVELAND aaren'rs, OHIO.

vALVE-SPRING L'rrrnn.

Application filed October 25, 1921. Serial No. 510,352.

To all whom it may concern:

Be it known that I, JOHN J. BAR'rENsrnIN, a citizen of the UnitedStates, residing at Cleveland Heights, in the county of Guyahoga andState of Ohio, have invented certain new and useful Improvements inValve- Spring Lifters, of which the following is a specification.

This invention relates to valve spring lifters for use in compressingthe coiled spring around the valve stem of an internalcombustion engineto release the tension of the spring upon its supporting pin and therebypermitting the withdrawing of said pin in order that the valve may beremoved.

Another object of the invention is to provide a simple and efficientvalve spring lifter, which will become and remain looked when the valvespring has been compressed, and is readily unlocked when it is desiredto release the spring.

With the above and other objects in view, the invention will behereinafter fully described as illustrated in the accompanying drawings,and the novel features thereof will be distinctly pointed out in theappended claims.

In the drawings similar characters of references are used to designatecorresponding parts.

Figure 1 is a side view of a valve spring lifter constructed inaccordance with my invention, the same being applied to a valve springin position for compressing the same, Fig. 2 is a similar view afterthevalve spring has been compressed, and

Fig. 3 is a plan view of the valve spring lifter as shown in Fig. 2.

Referring to the drawings 1 represents the valve of aninternal-combustion engine, 2 the stem thereof, and 3 the coiled springaround the valve stem. The pin 4 supports a washer 5, which carries thecoiled spring for exerting necessarytension on the valve. When it isdesired to remove the valve for regrinding or replacing the same, it isnecessary to relieve the tension of the coiled spring to permit thewithdrawal of the pin 4, and the valve spring lifterhereinafter'described is designed for accomplishing this purpose.

The valve spring lifter consists of a stationary arm 6 having aflattened and bifurcated end 7 for straddling the valve stem 2, and itsother end is formed into a handle 8. Fixed to the side of the arm 6 forserving pressing the valve spring 3, a pair of toggle links 16 and 17are pivoted to said stationary arm and said movable arm at 18 and 19respectively, and their inner ends are pivoted at 20 to a bar 21,whichis slidably mounted between the pairs of plates 9-10. The free endof the bar 21 is pivoted at 22 between a pair of plates 23-24 forming alug extending from a handle25, which is pivoted at 26 between rearwardlyextending upper ends 1l-12 of the pair of plates 9-10. By pressingtogether the handles 8 and 25, the bar 21 is forced forwardly and thepairs of links 16 and 17 exerting action upon the movable and stationaryarms 13 and 6 force their ends 15 and 7 outwardly from each other. Toprevent the toggle links 16 and 17 moving beyond their vertical aliningpositions, the bar 21 is made of such length, that the ends of the pairof plates 23-21 will engage the rear edges of the pair of plates 9-10before said toggle links reach their vertical alining positions. Whenthe pairs of links 16 and 17 reach their vertical alining positions, themovable arm 13 and the stationary arm 6 are held in their openpositions.

In order to lock the movable arm 13 and the stationary arm 6 in theiropen positions,

a pawl 27 is pivoted between the pair of plates 9-10 at 28 and its freeend is adapted to engage suitable ratchet teeth 29 provided in the edgeof the bar 21. A pushpin 30is arranged between the rearwardly extendingupper ends 11-12 of the plates will lift the pawl 27 out of engagementwith the ratchet teeth 29 of the bar 21, and upon relieving the pressureupon said handles, the movable arm 13 and the stationary arm 6 will beforced together by the action of the valve spring.

It is thought that from the description and drawings, the constructionand operation of the valve spring lifter herein disclosed will be fullyunderstood without further explanation, and that its advantages will beappreciated.

Having fully described my invention what I claim is:

I. In a. valve spring litter, the combina tion of a stationary arm, ahandle extending from the stationary arm, a movable arm supported on thestationary arm, a handle pivotally supported on the stationary arm,links pivotally connected to said arms and having free ends, and a barpivotally connected to, the second mentioned handle and to the free endsof said links, substantially as described.

2. In a valve spring lifter, the combination of astationary arm, ahandle extending from the stationary arm, a movable arm supported on thestationary arm, a handle pivotally supported on the stationary arm,means including a bar connecting the second mentionedhandle to saidarmsv whereby they will be actuated by the movement of the handles, andmeans for locking the bar to hold said arms in their open positions,substantially as described.

3. In a valve spring litter, the combination of a stationary arm, ahandle extending from the stationary arm, a movable arm supported on thestationary arm, a handle pivotally supported on the stationary arm,links pivotally connected to said arms. and having free ends, a barpivotally connected to the second mentioned handle and to the free endsof said links, and means for locking said bar in position to hold saidarms in open position, substantially as described.

4. In a valve spring lifter, the combination of a stationary arm, ahandle extending from the stationary arm, a movable arm supported on thestationary arm, a handle pivotally supported on the stationary arm,links pivotally connected to said arms and having free ends, a barpivotally connected to the second mentioned handle and to the free endsof said links, the bar being provided with teeth, and a pawl pivotallysupported. from the stationary arm for engaging the teeth, of said bar,substantially as described.

5. In a valve spring lifter, the combination of a stationary arm, ahandle extending from the stationary arm, a movable arm supported on thestationary arm, a handle pivotally supported on the stationary arm,links pivotally connected to said arms and having free ends, a barpivotally connected to the second mentioned handle and to the free endsof said links, the bar being pro vided with teeth, a pawl pivotallysupported from the stationary arm for engaging the teeth of said bar,and means for disengaging the pawl from said teeth to release the bar,substantially as described.

6. In a valve spring litter, the combination of a stationary arm, ahandle extending from the stationary arm, a movable arm supported on thestationary arm, a handle pivotally supported on the stationary arm,links pivotally connected to said arms and having free ends,a-ba-rpivotally connected to the second mentioned handle and to the freeends of said links, the bar being provided with teeth, a pawl pivotallysupported from the stationary arm for engaging the teeth or" said bar, apush-pin pivoted to the pawl tor disengaging the pawl from said teeth torelease the bar, and a spring tending to hold the push-"pin in its outerposition to keep the pawl in engagement with the teeth of the bar,substantially as described.

7 In a valve spring litter, the combination of a stationary arm, ahandle extending from the stationary arm, a bracket extending from thestationary arm, a movable arm supported on the bracket, a handlepivotally supported on the bracket, and means connecting the secondmentioned handle to said arms whereby they will be actuated by themovement of the handle, substantially as described.

8. In a valve spring litter, the combination of a stationary arm, ahandle extending from the stationary arm, a bracket extending on thestationary arm, a movable arm supported on the bracket, a handlepivotally supported from the bracket, a lug extending from the secondmentioned handle, links pivotally connected to said arms and having freeends, and a bar pivotally connected to said lug and to the free ends ofsaid links, substantially as described.

9. In a valve spring lifter, the combination of a stationary arm, ahandle extending from the stationary arm, a movable arm supported on thestationary arm, a. handle pivotally supported on the stationary arm.links pivotally connected to said arms and having free ends, abarpivotally connected to the second mentioned handle and to the free endsof said links, and the bar being of such length that said lug willengage said bracket to prevent said links reaching an alining position,substantially as described.

In testimony whereof I affix my signature.

JOHN J. BARTENSTEIN.

